The Micron MT58L64L18DT-10TR is a 1 Mbit synchronous SRAM from the SYNCBURST family, organized as 64K x 18 bits. It delivers a 5 ns access time with a 100 MHz clock.
The 5 ns access time at 100 MHz clock means the SRAM can deliver data within one clock cycle. The 64K x 18 organization gives an 18-bit data path.
Supplied in a 100-LQFP package (also designated 100-TQFP with body dimensions 14x20.1 mm). This is a standard fine-pitch surface-mount footprint for synchronous SRAMs of this density. The bulk packaging means the parts ship in trays or tubes, not tape-and-reel — factor that into your pick-and-place setup if you need reeled units.